package com.itema.mapper;

import com.itema.pojo.Student;
import com.itema.pojo.StudentQueryParam;
import org.apache.ibatis.annotations.*;

import java.util.List;
import java.util.Map;

@Mapper
public interface StudentMapper {
    /**
     *动态查询
     */

    List<Student> list(StudentQueryParam studentQueryParam);

    /**
     * 新增
     */
    @Insert("insert into student(name, no, gender, phone,id_card, is_college, address, degree, graduation_date,clazz_id, create_time, update_time) VALUES " +
            "(#{name},#{no},#{gender},#{phone},#{idCard},#{isCollege},#{address},#{degree},#{graduationDate},#{clazzId},#{createTime},#{updateTime})")
    void insert(Student student);

    /**
     * 根据id查询
     */
    @Select("select * from student where id=#{id}")
    Student findById(Integer id);

    void update(Student student);

    /**
     * 批量删除
     */
    void deleteByIds(List<Integer> ids);

    @Update("update student set violation_count = violation_count + 1 , violation_score = violation_score + #{score} , update_time = now() where id = #{id}")
    void updateViolation(Integer id, Integer score);

//    @Select("select c.name cname , count(s.id) scount from clazz c  left join student s on s.clazz_id = c.id group by c.name order by count(s.id) desc ")
//    List<Map> countStudentData();

    @MapKey("name")
    List<Map> countStudentDegreeData();

    /**
     * 统计班级人数
     */
    @Select("select c.name cname , count(s.id) scount from clazz c  left join student s on s.clazz_id = c.id group by c.name order by count(s.id) desc ")
    List<Map<String, Object>> getStudentCount();


}
